MOBILE CRANE VEHICLE FRAME HAVING DETACHABLY CONNECTED FRAME PARTS

Abstract

A vehicle frame and a mobile crane having such a vehicle frame includes a first frame part and a second frame part which can be detachably connected to each other via a common interface. The interface includes multiple points at which it is bolted to bolting elements assigned to the respective frame parts. The interface also includes at least one profile along which it engages with engaging elements assigned to the respective frame parts which, when the bolting elements are aligned with each other, are in a mutually positive-fit engagement across their extent.

Claims

1-10. (canceled)

11. A vehicle frame for a mobile crane, the vehicle frame comprising a first frame part and a second frame part which can be detachably connected to each other via a common interface, wherein the interface comprises multiple points at which it is bolted to bolting elements assigned to the respective frame parts, characterised in that the interface also comprises at least one profile along which it engages with engaging elements assigned to the respective frame parts which, when the bolting elements are aligned with each other, are in a mutually positive-fit engagement across their extent.

12. The vehicle frame in accordance with claim 11, wherein the engaging elements of at least one of the engaging profiles are designed, at least in portions, as flat engaging plates.

13. The vehicle frame in accordance with claim 11, wherein the bolting elements of at least one of the points at which the interface is bolted are designed to be aligned substantially in a first direction, and wherein the engaging elements of at least one of the engaging profiles are designed to form an engagement which transmits forces in a direction perpendicular to the first direction.

14. The vehicle frame in accordance with claim 11, respectively comprising at least two points at which the interface is bolted, which are arranged in planes which are spaced apart from each other, and at least two mutually spaced engaging profiles extend transversely thereto, wherein the planes and the engaging profiles in particular encircle a central region of the interface, specifically in the shape of a rectangle.

15. The vehicle frame in accordance with claim 11, wherein at least two bolting elements are respectively arranged on a common bracket, wherein the bolting elements and the engaging elements of the respective frame parts in particular contact each other and/or engage with each other substantially within one plane.

16. The vehicle frame in accordance with claim 11, wherein the engaging elements of at least one engaging profile extend in the horizontal or vertical direction.

17. The vehicle frame in accordance with claim 11, wherein the engaging elements of at least one engaging profile comprise multiple projections which taper towards the other engaging element of the engaging profile in each case.

18. The vehicle frame in accordance with claim 11, wherein the engaging elements of at least one engaging profile comprise multiple projections which extend in the horizontal or vertical direction.

19. The vehicle frame in accordance with claim 11, wherein at least one engaging element of at least one engaging profile is arranged on the respective frame part such that it is positionally adjustable by an adjusting mechanism and/or in the direction of its extent.

20. A mobile crane comprising a vehicle frame in accordance with claim 11.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is described below in more detail on the basis of a preferred embodiment and by referring to the accompanying figures. The invention can comprise all of the features described here, individually and in any expedient combination.

[0019] There is shown:

[0020] FIG. 1 a vehicle frame in accordance with the invention, comprising frame parts which are separated from each other;

[0021] FIG. 2 the vehicle frame from FIG. 1, with the frame parts positioned with respect to each other; and

[0022] FIG. 3 the vehicle frame from FIG. 1, with the frame parts fully bolted to each other.

DESCRIPTION

[0023] In the embodiment shown in FIG. 1, the central main frame of the mobile crane, which ultimately also accommodates the chassis components and the turntable mounting, forms a first frame part 1. The second frame part 2 is formed by the rear-end outrigger box which displaceably mounts the outrigger supports which can be extended on both sides of the mobile crane. In order to assembly the outrigger box 2 on the main frame 1, it is guided onto the main frame 1 in the longitudinal direction of the vehicle, such that the two contact each other in the region of their common interface 3. This step can be performed autonomously by the crane as part of its so-called “self-assembly”, in which the outrigger box 2 which is placed on a transport vehicle is received by the crane itself and positioned on the rear of the vehicle in the region of the interface 3.

[0024] On the sides of the main frame 1, the interface 3 comprises two simple brackets which extend in the vertical direction on both sides of the main frame 1 and each comprise two bolt eyes 4A. Two engaging plates 5A comprising a multitude of identically shaped, triangular projections extend between and perpendicular to these simple brackets. The complementary elements for a positive-fit connection with the main frame 1 are location on the sides of the outrigger box 2, i.e. two likewise horizontally extending engaging plates 5B, at the end regions of which two forked brackets extend, each comprising two bolt eyes 4B. As can be seen, the brackets and the engaging plates 5A, 5B delineate as large a rectangular region as possible in the plane of the interface 3, in order to be able to optimally transmit forces and moments between the frame parts 1 and 2.

[0025] When the outrigger box 2 approaches the main frame 1, the simple brackets of the main frame 1 move into the forked brackets of the outrigger box 2, while the engaging plates 5A and 5B of the frame parts 1 and 2 are simultaneously moved into engagement. This ultimately creates a multitude of evenly distributed abutting surfaces across the extent of the two engaging profiles, via which not only the main frame 1 can be supported on the outrigger box 2, but also the outrigger box 2 can be supported on the main frame 1.

[0026] FIG. 2 shows the frame parts 1 and 2 in their final position in which they contact each other at the interface 3 and can be bolted to each other at the points at which the interface is bolted, wherein the bolts, which are not indicated in more detail in FIG. 2, can be hydraulically inserted into and also withdrawn again from the corresponding receptacles 4A and 4B.

[0027] FIG. 3 shows the outrigger box 2 once it has been fully bolted to the main frame 1.